<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
          </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" 
                    clearable @clear="getUserList()">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible= 'ture'">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column> 
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" >
                   <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
                   </template>
                </el-table-column>
                <el-table-column label="操作" >
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>             
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1,2,5,10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
          </el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%"
        @close="addDialogClosed">
            <!-- 内容主体区域 -->
            <el-form ref="addFormRef" :model="addForm" label-width="70px"
            :rules="addFormRules">
                <el-form-item label="用户名" prop="username">
                  <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%"
        @close="editDialogClosed">
            <!-- 内容主体区域 -->
            <el-form ref="editFormRef" :model="editForm" label-width="70px"
            :rules="editFormRules">
                <el-form-item label="用户名">
                  <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>

            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo()">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 分配角色对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                          v-for="item in rolesList"
                          :key="item.id"
                          :label="item.roleName"
                          :value="item.id">
                        </el-option>
                      </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default{
    data(){
        //验证邮箱的规则
        var checkEmail = (rule,value,cb)=>{
            //验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if(regEmail.test(value)){
                //合法的邮箱
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }
        //验证手机号的规则
        var checkMobile = (rule,value,cb)=>{
            //验证手机号的正则表达式
            const regMobile =/^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/
            if(regMobile.test(value)){
                //合法的手机号
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return{
            //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前的页数
                pagenum: 1,
                //当前每页显示多少条数据
                pagesize: 2
            },
            userlist:[],
            total:0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            //添加用户的表单数据
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            //添加表单的验证规则对象
            addFormRules:{
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名长度在 3~10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '密码长度在 6~15 个字符', trigger: 'blur' }
                ],
                email:[
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormRules:{
                email:[
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile:[
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            //控制分配角色对话框的显示与隐藏
            setRoleDialogVisible:false,
            //需要被分配角色的用户信息
            userInfo:{},
            //所有角色的数据列表
            rolesList:[],
            //已选中的角色id值
            selectedRoleId:''
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res} =  await this.$http.get("users",{ params:this.queryInfo})
            // console.log(res)
            if(res.meta.status !== 200) return this.$message.error(res.meta.msg);
            this.userlist = res.data.users
            this.total = res.data.total
        },
        //监听 pagesize 改变的事件
        handleSizeChange(newSize){
            //console.log(newSize)
            this.queryInfo.pagesize  = newSize
            this.getUserList()
        },
        //监听 页码值 改变的事件
        handleCurrentChange(newPage){
           // console.log(newPage)
            this.queryInfo.pagenum  = newPage
            this.getUserList()
        },
        //监听 switch 开关状态的改变
        async userStateChange(userinfo){
            //console.log(userinfo)
            const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error(res.meta.msg);
            }
            this.$message.success(res.meta.msg);
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮，添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async valid =>{
                // console.log(valid)
                if(!valid) return
                //可以发起添加用户的网络请求
                const {data:res} = await this.$http.post('users',this.addForm)
                if(res.meta.status !== 201){
                    return this.$message.error(res.meta.msg);
                }
                this.$message.success(res.meta.msg);
                //隐藏添加用户的对话框
                this.addDialogVisible= false
                //重新获取用户列表数据
                this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog(id){
            const {data:res} = await this.$http.get('users/'+id)
            if(res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败');
            }
            // console.log(res.data)
            this.editForm = res.data
            this.editDialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //点击按钮，修改用户
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid =>{
                // console.log(valid)
                if(!valid) return
                //可以发起修改用户的网络请求
                const {data:res} = await this.$http.put('users/'+this.editForm.id, {
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })
                if(res.meta.status !== 200){
                    return this.$message.error('更新用户信息失败');
                }
                //关闭对话框
                this.$message.success('更新用户信息成功');
                //隐藏修改用户的对话框
                this.editDialogVisible = false
                //重新获取用户列表数据
                this.getUserList()
            })
        },
        //对于id删除对应的用户信息
        async removeUserById(id){
            // console.log(id)
            //弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning' 
            }).catch(err=>err)
            //如果用户确认删除，则返回值为字符串 confirm
            //如果用户取消了 删除，则返回值为字符串cancel
            // console.log(confirmResult)
            if(confirmResult !=='confirm'){
                return this.$message.info('已取消删除')
            }
            const {data:res} = await this.$http.delete('users/'+id)
            if(res.meta.status !== 200){
                return this.$message.error('删除用户失败');
            }
            this.$message.success('删除用户成功');
            this.getUserList()
        },
        //展示分配角色的对话框
         async setRole(userInfo){
            this.userInfo = userInfo
            //在展示对话框之前获取所有角色列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status!=200){
                return this.$message.error('获取角色列表失败')
            }
            //获取的角色列表的数据保存到data中
            this.rolesList = res.data
            console.log(this.rolesList)
            this.setRoleDialogVisible = true
        },
        //点击按钮，分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色！')
            }
            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})
            if(res.meta.status!=200){
                return this.$message.error('更新角色失败')
            }
            this.$message.error('更新角色成功')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId =''
        }

    }

}
</script>

<style lang="less" scoped>

</style>